Complaint about regular theft at kurla station

Hello sir,
I have a daily routine of travelling to kurla since my college is in Kurla. i have found many a times, people complaining about theft of cell phones in train in at kurla station.
one fine day, it happened that my brother’s cell phone was stolen at Kurla station, hence we rushed to station police station for complaint. there we found many people in queue for registering complaint of theft of cell phones; one boy even told that the constable at Kurla agreed that police knows about the thieves and their location but couldn’t help out till we have any reference with higher authority. i want to complaint about this and stop this heinous crime of corruption to take a step towards corruption free India. Pease help out.